R. Guiradolopez et al., ELECTRONIC AND GEOMETRICAL EFFECTS ON THE MAGNETISM OF SMALL RU-N CLUSTERS, Journal of magnetism and magnetic materials, 186(1-2), 1998, pp. 214-222
Size-dependent, magnetic and structural properties of small Ru-N clust
ers are calculated using a tight-binding Hubbard Hamiltonian in the un
restricted Hartree-Fock approximation. The calculated average magnetic
moment shows very strong oscillations as a function of the cluster si
ze, which is in contrast with the almost independent behavior previous
ly found in the iron-group clusters, Small cohesive energy differences
are found between isomers while on the contrary, the magnetic moments
differ considerably. Our results are in agreement with the existing e
xperimental measurements, (C) 1998 Elsevier Science B.V. All rights re
served.